FEJDMath
Class QuadraticFct

java.lang.Object
  FEJDMath.ShapeFunction
      FEJDMath.QuadraticFct

class QuadraticFct

extends ShapeFunction

Represents a 2D quadratic function

Constructor Summary

QuadraticFct(int a, int b, int c, int d, int e, int f)
Makes a new QuadraticFct of the form: a + b*X + c*Y + d*X² + e*Y² + f*X*Y

Method Summary

double	computeFctAt(double x, double y) Returns the value of the function at (x,y)
Vector2	computeGradAt(double x, double y) Returns the value of the gradient of the function at (x,y)
double	getCoeffElem(int i) Returns the ith coefficient of the function
void	setCoeffElem(int i, double d) Sets the ith coefficient of the function to value
void	setNbOfCoeff(int i) Sets the number of coefficients of the function to i
java.lang.String	toString() Returns a description of the function

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

QuadraticFct

public QuadraticFct(int a,
                    int b,
                    int c,
                    int d,
                    int e,
                    int f)

Makes a new QuadraticFct of the form: a + b*X + c*Y + d*X² + e*Y² + f*X*Y

Method Detail

computeGradAt

public Vector2 computeGradAt(double x,
                             double y)

Description copied from class: ShapeFunction

Returns the value of the gradient of the function at (x,y)

Specified by:

computeGradAt in class ShapeFunction

computeFctAt

public double computeFctAt(double x,
                           double y)

Description copied from class: ShapeFunction

Returns the value of the function at (x,y)

Specified by:

computeFctAt in class ShapeFunction

toString

public java.lang.String toString()

Returns a description of the function

Specified by:

toString in class ShapeFunction

getCoeffElem

public double getCoeffElem(int i)

Returns the ith coefficient of the function

setCoeffElem

public void setCoeffElem(int i,
                         double d)

Sets the ith coefficient of the function to value

setNbOfCoeff

public void setNbOfCoeff(int i)

Sets the number of coefficients of the function to i